46 CFR §154.1810
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
- (a)No person may operate a foreign flag vessel, whose flag administration does not issue IMO Certificates, on the navigable waters of the United States, or a U.S. flag vessel, unless the vessel has on board a cargo manual containing the following information:
- (1)A description of each cargo carried, its handling hazards as a liquid or as a gas including frostbite or asphyxiation, its safety equipment and necessary first aid measures required by this part.
- (2)A description of the dangers of asphyxiation from the inerting gases used on the vessel.
- (3)The measures that mitigate embrittlement of steel structure in way of cargo leakage.
- (4)The use of the firefighting systems on the vessel.
- (5)The features of the cargo containment system that affect its operation and maintenance, including pressure and temperature ranges and relief valve settings.
- (6)Pressures, temperatures, and liquid levels for all operations.
- (7)General information derived from the first loading of the vessel.
- (8)Alarm settings.
- (9)Descriptions of the components of the cargo system, including the following:
- (i)Liquid cargo system.
- (ii)Liquid recirculating or condensate return system.
- (iii)Cargo tank cool-down system.
- (iv)Cargo tank warm-up or vaporization system.
- (v)Gas main system.
- (vi)Cargo tank or compressor relief system and blocked liquid or gas relief system.
- (vii)Inerting system.
- (viii)Boil-off gas compressor or reliquefaction system.
- (ix)Gas detection systems.
- (x)Alarm or safety indication systems.
- (xi)Cargo jettisoning system.
- (xii)The system for using boil-off gas as fuel.
- (10)A description of cargo loading and discharge operations, including simultaneous handling of multigrades of cargo and ballast.
- (11)A description of cargo operations during the voyage.
- (12)A description of cargo tank cool-down and warm-up operations including purging with inert gas and air.
- (13)A description of hull and cargo tank temperature monitoring systems.
- (14)A description of gas detection systems and alarm or safety systems.
- (15)A description of the following conditions and their symptoms, including emergency measures and corrective actions:
- (i)Cargo or ballast valve malfunction.
- (ii)Low cargo tank gas pressure.
- (iii)High fill level shutdown.
- (iv)Gas compressor shutdown.
- (v)Hull cold spots.
- (vi)Cargo piping leaks.
- (vii)Primary or secondary barrier failure.
- (viii)Hold boundary structural failure.
- (ix)Fire in vent mast head.
- (x)Reliquefaction plant failure.
- (xi)Vaporizer malfunction or failure.
- (xii)Piping or cargo valve freeze-up.
- (16)Any other matters relating to operation of the cargo systems.
- (17)The operational means to maintain the vessel in a condition of positive stability in accordance with the loading and stability manual under § 154.1809 through all conditions of:
- (b)The master shall ensure that the cargo manual is kept up-to-date.